LO8-4 PROBLEM 8.5A Periodic Inventory Costing Procedures Clear Sound Audio uses a periodic inventory system. One of the store's most popular products is an MP8 car stereo system. The inventory quantities, purchases, and sales of this product for the most recent year are as follows. Cost Number of Units Total Cost per Unit 12 $299 306 15 21 308 Inventory, Jan. 1 First purchase (May 12) Second purchase (July 9).. Third purchase (Oct. 4). Fourth purchase (Dec. 18). Goods available for sale. Units sold during the year Inventory, Dec. 31. $ 3,588 4,590 6,468 2,520 5,440 $22,606 8 315 320 17 73 51 22 Instructions a. Using periodic costing procedures, compute the cost of the December 31 inventory and the cost of goods sold for the MP8 systems during the year under each of the following cost flow assumptions. 1. First-in, first-out. 2. Last-in, first-out. 3. Average cost (round to nearest dollar, except unit cost, and ignore small total rounding difference) b. Which of the three inventory pricing methods provides the most realistic balance sheet valu- ation of inventory in light of the current replacement cost of the MP8 units? Does this same method also produce the most realistic measure of income in light of the costs being incurred by Clear Sound Audio to replace the MP8 systems when they are sold? Explain